cef/tests/cefclient/binding_test.cpp

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// Copyright (c) 2008-2009 The Chromium Embedded Framework Authors. All rights
// reserved. Use of this source code is governed by a BSD-style license that
// can be found in the LICENSE file.
#include "binding_test.h"
#include <sstream>
// Implementation of the V8 handler class for the "window.cef_test.Dump"
// function.
class ClientV8FunctionHandler : public CefThreadSafeBase<CefV8Handler>
{
public:
ClientV8FunctionHandler() {}
virtual ~ClientV8FunctionHandler() {}
// Execute with the specified argument list and return value. Return true if
// the method was handled.
virtual bool Execute(const CefString& name,
CefRefPtr<CefV8Value> object,
const CefV8ValueList& arguments,
CefRefPtr<CefV8Value>& retval,
CefString& exception)
{
if(name == "Dump")
{
// The "Dump" function will return a human-readable dump of the input
// arguments.
std::stringstream stream;
size_t i;
for(i = 0; i < arguments.size(); ++i)
{
stream << "arg[" << i << "] = ";
PrintValue(arguments[i], stream, 0);
stream << "\n";
}
retval = CefV8Value::CreateString(stream.str());
return true;
}
else if(name == "Call")
{
// The "Call" function will execute a function to get an object and then
// return the result of calling a function belonging to that object. The
// first arument is the function that will return an object and the second
// argument is the function that will be called on that returned object.
int argSize = arguments.size();
if(argSize < 2 || !arguments[0]->IsFunction()
|| !arguments[1]->IsString())
return false;
CefV8ValueList argList;
// Execute the function stored in the first argument to retrieve an
// object.
CefRefPtr<CefV8Value> objectPtr;
if(!arguments[0]->ExecuteFunction(object, argList, objectPtr, exception))
return false;
// Verify that the returned value is an object.
if(!objectPtr.get() || !objectPtr->IsObject())
return false;
// Retrieve the member function specified by name in the second argument
// from the object.
CefRefPtr<CefV8Value> funcPtr =
objectPtr->GetValue(arguments[1]->GetStringValue());
// Verify that the returned value is a function.
if(!funcPtr.get() || !funcPtr->IsFunction())
return false;
// Pass any additional arguments on to the member function.
for(int i = 2; i < argSize; ++i)
argList.push_back(arguments[i]);
// Execute the member function.
return funcPtr->ExecuteFunction(arguments[0], argList, retval, exception);
}
return false;
}
// Simple function for formatted output of a V8 value.
void PrintValue(CefRefPtr<CefV8Value> value, std::stringstream &stream,
int indent)
{
std::stringstream indent_stream;
for(int i = 0; i < indent; ++i)
indent_stream << " ";
std::string indent_str = indent_stream.str();
if(value->IsUndefined())
stream << "(undefined)";
else if(value->IsNull())
stream << "(null)";
else if(value->IsBool())
stream << "(bool) " << (value->GetBoolValue() ? "true" : "false");
else if(value->IsInt())
stream << "(int) " << value->GetIntValue();
else if(value->IsDouble())
stream << "(double) " << value->GetDoubleValue();
else if(value->IsString())
stream << "(string) " << std::string(value->GetStringValue());
else if(value->IsFunction())
stream << "(function) " << std::string(value->GetFunctionName());
else if(value->IsArray()) {
stream << "(array) [";
int len = value->GetArrayLength();
for(int i = 0; i < len; ++i) {
stream << "\n " << indent_str.c_str() << i << " = ";
PrintValue(value->GetValue(i), stream, indent+1);
}
stream << "\n" << indent_str.c_str() << "]";
} else if(value->IsObject()) {
stream << "(object) [";
std::vector<CefString> keys;
if(value->GetKeys(keys)) {
for(size_t i = 0; i < keys.size(); ++i) {
stream << "\n " << indent_str.c_str() << keys[i].c_str() << " = ";
PrintValue(value->GetValue(keys[i]), stream, indent+1);
}
}
stream << "\n" << indent_str.c_str() << "]";
}
}
};
void InitBindingTest(CefRefPtr<CefBrowser> browser,
CefRefPtr<CefFrame> frame,
CefRefPtr<CefV8Value> object)
{
// Create the new V8 object.
CefRefPtr<CefV8Value> testObjPtr = CefV8Value::CreateObject(NULL);
// Add the new V8 object to the global window object with the name
// "cef_test".
object->SetValue("cef_test", testObjPtr);
// Create an instance of ClientV8FunctionHandler as the V8 handler.
CefRefPtr<CefV8Handler> handlerPtr = new ClientV8FunctionHandler();
// Add a new V8 function to the cef_test object with the name "Dump".
testObjPtr->SetValue("Dump",
CefV8Value::CreateFunction("Dump", handlerPtr));
// Add a new V8 function to the cef_test object with the name "Call".
testObjPtr->SetValue("Call",
CefV8Value::CreateFunction("Call", handlerPtr));
}
void RunBindingTest(CefRefPtr<CefBrowser> browser)
{
std::string html =
"<html><body>ClientV8FunctionHandler says:<br><pre>"
"<script language=\"JavaScript\">"
"document.writeln(window.cef_test.Dump(false, 1, 7.6654,'bar',"
" [false,true],[5, 7.654, 1, 'foo', [true, 'bar'], 8]));"
"document.writeln(window.cef_test.Dump(cef));"
"document.writeln("
" window.cef_test.Call(cef.test.test_object, 'GetMessage'));"
"function my_object() {"
" var obj = {};"
" (function() {"
" obj.GetMessage = function(a) {"
" return 'Calling a function with value '+a+' on a user object succeeded.';"
" };"
" })();"
" return obj;"
"};"
"document.writeln("
" window.cef_test.Call(my_object, 'GetMessage', 'foobar'));"
"</script>"
"</pre></body></html>";
browser->GetMainFrame()->LoadString(html, "about:blank");
}